X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrstr.c;h=793d38a09b29819ce8c9c8c014807b471191592a;hb=d02f38605b53cdff5460cc6b9e1b2a80c3a2ba4c;hp=4587c68c6e2d5f107b5eeedfc506763d42a6cb09;hpb=c0169638bd02098717cb23fbbca3bcc4e4caccf0;p=pdclib

diff --git a/functions/string/strstr.c b/functions/string/strstr.c
index 4587c68..793d38a 100644
--- a/functions/string/strstr.c
+++ b/functions/string/strstr.c
@@ -10,6 +10,8 @@
 
 #include <string.h>
 
+#ifndef REGTEST
+
 char * strstr( const char * s1, const char * s2 )
 {
     const char * p1 = s1;
@@ -32,4 +34,20 @@ char * strstr( const char * s1, const char * s2 )
     return NULL;
 }
 
-#warning Test driver missing.
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    char s[] = "abcabcabcdabcde";
+    TESTCASE( strstr( s, "x" ) == NULL );
+    TESTCASE( strstr( s, "xyz" ) == NULL );
+    TESTCASE( strstr( s, "a" ) == &s[0] );
+    TESTCASE( strstr( s, "abc" ) == &s[0] );
+    TESTCASE( strstr( s, "abcd" ) == &s[6] );
+    TESTCASE( strstr( s, "abcde" ) == &s[10] );
+    return TEST_RESULTS;
+}
+#endif